초록 ▼

Hydraulic or electro-hydraulic braking systems which include at least one wheel braking device and micro-machined technology, such as microvalves, are described herein. The use of the microvalves helps to eliminate audible noise produced in the hydraulic systems as well as allows for reduced package

Hydraulic or electro-hydraulic braking systems which include at least one wheel braking device and micro-machined technology, such as microvalves, are described herein. The use of the microvalves helps to eliminate audible noise produced in the hydraulic systems as well as allows for reduced package size of the system. In particular, many of the braking systems described herein have Anti-lock Braking System (ABS) capabilities, and as such employ apply microvalves, dump microvalves and changeover microvalves. The microvalves may be digitally or proportionally controlled for selectively controlling the pressure supplied to the wheel brake cylinders.

대표청구항 ▼

Hydraulic or electro-hydraulic braking systems which include at least one wheel braking device and micro-machined technology, such as microvalves, are described herein. The use of the microvalves helps to eliminate audible noise produced in the hydraulic systems as well as allows for reduced package

Hydraulic or electro-hydraulic braking systems which include at least one wheel braking device and micro-machined technology, such as microvalves, are described herein. The use of the microvalves helps to eliminate audible noise produced in the hydraulic systems as well as allows for reduced package size of the system. In particular, many of the braking systems described herein have Anti-lock Braking System (ABS) capabilities, and as such employ apply microvalves, dump microvalves and changeover microvalves. The microvalves may be digitally or proportionally controlled for selectively controlling the pressure supplied to the wheel brake cylinders. ices, comprising: (a) a test input file containing IP subscriber numbers identified in ranges with each range representing a call behavior group of internet clients; (b) test logic scripts which describe calling process actions and/or internet client call behavior in each call behavior group for the respective applications; (b1) an application server responsive to the test scripts for providing applications for different types of telephone services for the internet clients. (c) test assignment apparatus which assigns the test logic scripts to a call processing pool; (d) call implementation apparatus within the call processing pool, the apparatus implementing the test logic script in executing a call to a group of telephone numbers of the internet clients in different behavior groups related to the test logic script for testing telephone services prior to the availability of the services to the internet clients; and (e) a test output data file which records the test logic scripts and corresponding responses received by each call implementation apparatus for the test logic script in each group of related telephone numbers of the internet clients for comparison and validation of the test logic script for each group. 2. The telephone call simulator of claim 1 further comprising: (f) test database storing apparatus which stores the telephone number in groups, each group related to a different calling process actions and/or subscriber call behavior responsive to a telephone call initiated by the simulator. 3. The telephone call simulator of claim 1 further comprising: (g) test logic script software instructions which initiates scripted calls to telephone numbers, receive return signals from the called number and indicate success or failure of service applications for clients in different behavior groups. 4. The telephone call simulator of claim 1 further comprising: (h) recording apparatus which records the assignment of test logic scripts and called telephone numbers by the test assignment apparatus. 5. The telephone call simulator of claim 1 further comprising: (i) communication apparatus linking the channel processing pool to a PSTN. 6. The telephone call simulator of claim 1 further comprising: (j) reporting apparatus which reports the results of the test logic scripts to the test output data file. 7. The telephone call simulator of claim 1 further comprising: (k) test writing apparatus which writes test logic script and telephone number assignment to the test output data file. 8. The telephone call simulator of claim 1 further comprising: (l) receiver apparatus which receives signals transmitted by called telephone in response to a test logic script. 9. The telephone call simulator of claim 1 further comprising: (m) test determining apparatus which determines whether the service test was successful or failed. 10. The telephone call simulator of claim 1 further comprising: (n) test comparison apparatus which compares the test logic script assignment and the test logic script results for validation of the telephone service. 11. A method of generating telephone calls for testing call processing actions and/or subscriber call behavior in a PSTN-IP telephone service, comprising the steps of: (a) generating and storing in a test input data file subscriber telephone numbers identified in ranges with each range representing a call behavior group of internet clients; (b) generating and storing in the test input data file test logic scripts for testing the calling process actions and subscriber call behavior in each group of related telephone numbers for the respective applications; (b1) providing applications for different types of telephone services in response to the test scripts for the internet clients; (c) retrieving the telephone numbers by groups and the corresponding related test logic script; (d) assigning the related telephone numbers by group and corresponding test logic script to a call processing apparatus; (e) implementing telephone calls by the call processing apparatus to the related group of telephone numbers according to the corresponding test logic script for testing telephone services prior to the availability of the services to the internet clients; and (f) recording and storing calling results of the test logic script for each group of related telephone numbers of the internet clients for comparison with the test logic script in validating the PSTN-IP telephone service. 12. The method of claim 11 further comprising the step of: (f) storing the telephone number in groups, each group related to a different calling process actions and/or subscriber call behavior responsive to a telephone call initiated by the simulator. 13. The method of claim 11 further comprising the step of: (g) initiating scripted call to telephone numbers, receiving return signals from the called number and indicating call success or call failure. 14. The method of claim 11 further comprising the step of: (h) recording apparatus which records the assignment of test logic scripts and called telephone numbers by the test assignment apparatus. 15. The method of claim 11 further comprising the step of: (i) linking the channel processing pool to a PSTN. 16. The method of claim 11 further comprising the step of: i) reporting the results of the test logic scripts to the test output data file. 17. The method of claim 11 further comprising the step of: (k) writing test logic script and telephone number assignment to the test output data file. 18. The method of claim 11 further comprising the step of: (l) receiving signals transmitted by called telephone in response to a test logic script. 19. The method of claim 11 further comprising the step of: (m) determining whether the test was successful or failed. 20. The method of claim 11 further comprising the step of. 21. A program medium, executable in a computer system, for generating telephone calls for testing call processing actions and/or subscriber call behavior in a PSTN-IP telephone service, the medium comprising: (a) program instructions for generating and storing in a test input data file subscriber telephone numbers identified in ranges with each range representing a call behavior group of internet clients; (a1) program instructions providing different types of telephone services for the internet clients; (b) program instructions for generating and storing in the test input data file test logic scripts for testing the calling process actions and subscriber call behavior in each group of related telephone numbers for the respective applications; (c) program instructions for retrieving the telephone numbers by groups and the corresponding related test logic script; (d) program instructions for assigning the related telephone numbers by group and corresponding test logic script to a call processing apparatus; (e) program instructions for implementing telephone calls by the call processing apparatus to the related group of telephone numbers of the internet clients according to the corresponding test logic script for testing telephone services prior to the availability of the services to the internet clients; and (f) program instructions for recording and storing calling results of the test logic script for each group of related telephone numbers of the internet clients for comparison with the test logic script in validating the PSTN-IP telephone service. 22. The program medium of claim 21 further comprising: (f) program instructions for storing the telephone number in groups, each group related to a different calling process actions and/or subscriber call behavior responsive to a telephone call initiated by the simulator. 23. The program medium of claim 21 further comprising: (g) program instructions for initiating scripted call to telephone numbers, receiving return signals from the called number and